:root {
  --bg: #f6f4ee;
  --panel: #ffffff;
  --text: #1f2a1f;
  --muted: #647168;
  --line: #d9e3d7;
  --brand: #7b9b7d;
  --brand-dark: #618066;
  --brand-soft: #edf5ed;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #f8f6f0 0%, #f2efe6 100%);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell,
.doc-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(180deg, #89aa8b 0%, #6d8b72 100%);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 24px;
  font-weight: 700;
  box-shadow: 0 10px 22px rgba(107, 137, 112, 0.18);
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
}

.brand-tagline,
.hero-note,
.footer-meta,
.doc-header p {
  color: var(--muted);
}

.topnav {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  padding: 12px 0 20px;
}

.hero-copy,
.hero-panel,
.info-card,
.doc-content section {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(217, 227, 215, 0.8);
  border-radius: 24px;
  box-shadow: 0 12px 28px rgba(136, 154, 134, 0.08);
}

.hero-copy {
  padding: 40px 36px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 600;
}

.hero-copy h1 {
  margin: 18px 0 14px;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.12;
}

.hero-copy p {
  margin: 0;
  color: #415142;
  font-size: 16px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 600;
}

.primary-btn {
  background: var(--brand);
  color: #fff;
}

.secondary-btn {
  background: #fff;
  color: var(--brand-dark);
  border: 1px solid var(--line);
}

.hero-note {
  margin-top: 18px;
  font-size: 13px;
}

.hero-panel {
  padding: 30px 24px;
}

.panel-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.feature-list {
  display: grid;
  gap: 14px;
}

.feature-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: 14px;
  border-radius: 18px;
  background: #f8fbf8;
  border: 1px solid #e4ece3;
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: #fff;
  font-size: 22px;
}

.feature-name {
  font-weight: 700;
  margin-bottom: 4px;
}

.feature-desc {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 8px 0 40px;
}

.info-card {
  padding: 24px 22px;
}

.info-card h2,
.doc-content h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.info-card p,
.doc-content p,
.doc-content li {
  margin: 0;
  color: #415142;
  line-height: 1.8;
  font-size: 15px;
}

.footer {
  padding: 18px 0 36px;
  border-top: 1px solid rgba(217, 227, 215, 0.8);
  color: var(--muted);
}

.footer-brand,
.footer-links {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links {
  margin: 12px 0 10px;
}

.site-record,
.doc-footer {
  margin-top: 16px;
  font-size: 13px;
}

.site-record a,
.doc-footer a {
  color: var(--muted);
}

.doc-shell {
  padding: 24px 0 48px;
}

.doc-header {
  padding: 8px 0 18px;
}

.doc-header h1 {
  margin: 16px 0 8px;
  font-size: 34px;
}

.back-link {
  color: var(--brand-dark);
  font-size: 14px;
  font-weight: 600;
}

.doc-content {
  display: grid;
  gap: 18px;
}

.doc-footer {
  padding: 22px 0 0;
}

.doc-content section {
  padding: 24px 24px 22px;
}

.doc-content ul {
  margin: 12px 0 0;
  padding-left: 22px;
}

@media (max-width: 920px) {
  .hero,
  .section-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .hero-copy,
  .hero-panel {
    padding: 28px 22px;
  }
}